If you want to stop Windows updates completely, you can disable the Windows Update service.
- Press Win + R, type
services.msc, and press Enter. - Find Windows Update in the list.
- Double-click it.
- Click Stop.
- Change Startup type to Disabled.
- Click Apply and OK.
You can also disable update-related scheduled tasks in Task Scheduler and set your network connection as Metered for additional protection against automatic downloads.
Keep in mind that disabling updates will prevent both feature updates and security updates, so you'll need to manually check for updates from time to time if you want to stay protected.